If you are not going to the doctor, or hospital, and depending on what it is, I believe the only thing you can buy OTC is a cream or ointment for localized pains. I could be wrong, but I recall a trainer says that in conversation.
You might want to just breeze through or call your local pharmacist, and a lot of times they can give you some help on such questions for OTC. Or advise if you need a script.
